DUSTIEAIM-FTIR

Coarse-Mode Filter and Online FTIR during DUSTIEAIM

10 October 2026 - 20 April 2027

Lead Scientist: Lynn Russell

Observatory: AMF (ARM Mobile Facility 1) - DST

The Desert-Urban System Integrated Atmospheric Monsoon (DUSTIEAIM) campaign is planned to collect data starting June 1, 2026. The first ARM Mobile Facility (AMF1) will operate for 18 months at the Main Site, located within the Phoenix metropolitan area on the Arizona State University-West Campus. DUSTIEAIM’s science focus is to quantify the bimodal water cycle during the winter and summer, and energy budgets at the urban/rural/agricultural interface of the southwestern U.S. as regional air masses and meteorological patterns change throughout the year in response to the seasonal cycle. This campaign adds to this focus by characterizing the coarse-mode composition in the spring and fall. The approach is to provide twice daily submicron filter measurements by FTIR to provide validation of a new online aerosol FTIR instrument which will measure coarse- and fine-mode aerosol hourly.